CVE-2026-42497
Description
A flaw was found in perl-Archive-Tar. This vulnerability allows an attacker to craft a malicious tar archive that, when extracted, can create hardlinks to arbitrary files outside the intended extraction directory. This could lead to the modification of sensitive files on the system, potentially resulting in data corruption or unauthorized access.
Statement
This Moderate impact vulnerability in perl-Archive-Tar allows an attacker to modify arbitrary files on the system. By crafting a malicious tar archive, an attacker can exploit a path traversal flaw during extraction to create hardlinks outside the intended directory. This could lead to data corruption or unauthorized changes to sensitive system files if a user extracts a specially crafted archive.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 6.8 | 7.5 | 7.5 |
| Attack Vector | Local | Network | Network |
| Attack Complexity | Low | Low | Low |
| Privileges Required | Low | None | None |
| User Interaction | Required | None | None |
| Scope | Unchanged | Unchanged | Unchanged |
| Confidentiality | Low | None | None |
| Integrity Impact | High | High | High |
| Availability Impact | High | None | None |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:H
NVD: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
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